Front wheel with quick release structure

Abstract

The utility model discloses a front wheel with a quick release structure, which comprises a mounting beam, square pipes, a pressing rod, a locking ring, a locking spring, a locking section, a connecting pipe, a telescopic column, a wheel body bracket, a bottom spring, a rigid spring and a front wheel body, the square pipes are symmetrically welded on one side of the mounting beam, and the top ends of the inner parts of the square pipes are sleeved with top sleeves; a support frame is arranged at the top of the top sleeve; according to the front wheel body fixing device, when the front wheel body fixing device is used, the locking ring is tightly pressed on the locking section under the action of the locking spring, and the wheel body support and the front wheel body are fixed by clamping the inclined table protrusion; during unlocking, fixing of the front wheel body can be relieved by pressing the pressing rod, the disassembling process is faster, a traditional pin fixing mode is replaced, and the practicability of the structure is improved; when the camping car is used on the uneven ground, the bottom springs and the rigid springs are extruded and stretched to buffer generated vibration, structural breakage and damage caused by vibration are avoided, and therefore the service life of the structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of camping car accessories, in particular to a front wheel with a quick-release structure. Background Technique

[0002] The push-pull camping car is one of the commonly used equipment in outdoor camping activities, which can help campers easily carry and transport camping items and equipment; among them, the wheel body of the trolley, as the rolling support structure of the whole vehicle body, is an important accessory of the camping car. In order to facilitate the later cleaning or maintenance of the vehicle body, the existing camping cars generally use a detachable front wheel structure. The existing detachable front wheels for camping cars can basically meet the daily use requirements, but there are still some deficiencies. First, most of the existing detachable front wheels use pins for limit fixation. When disassembling, the whole pin needs to be removed, and the disassembly process is not convenient. At the same time, the pins are easy to be lost, which affects the practicability of the structure. Second, the support part of the wheel body in the existing detachable front wheel structure is relatively simple. When used on uneven roadsides, the vibration generated during driving is easy to damage the wheel body, thus shortening the service life of the front wheel. Therefore, it is very necessary to design a front wheel with a quick-release structure. Content of the Utility Model

[0003] The purpose of the utility model is to provide a front wheel with a quick-release structure to solve the problems that most of the existing detachable front wheels use pins for limit fixation, the whole pin needs to be removed during disassembly, the disassembly process is not convenient, and the pins are easy to be lost, which affects the practicability of the structure; and the support part of the wheel body is relatively simple. When used on uneven roadsides, the vibration generated during driving is easy to damage the wheel body, shortening the service life of the front wheel.

[0004] To solve the above technical problems, the utility model provides the following technical solution: A front wheel with a quick-release structure, including an installation beam, a square tube, a top sleeve, a support frame, a pressing rod, a locking ring, a limiting protrusion, a locking spring, a locking section, a connecting pipe, a telescopic column, a support ring, a wheel body bracket, a bottom spring, a rigid spring and a front wheel body. Square tubes are symmetrically welded on one side of the installation beam, and a top sleeve is sleeved at the inner top end of the square tube. A support frame is arranged at the top of the top sleeve, and a square groove is opened on one side of the support frame. A pressing rod is slidably connected in the square groove. The pressing rod is arranged on one side of the locking ring, and a limiting protrusion is arranged on the other side of the locking ring. One end of the locking spring is sleeved on the limiting protrusion, and the locking spring is sleeved in a groove opened inside the support frame. The inner wall of the locking ring presses against the locking section, and a connecting pipe is arranged at the bottom of the locking section. A telescopic column is slidably connected in the connecting pipe, and a support ring is arranged at the bottom of the telescopic column. The support ring is fixed at the top of the wheel body bracket.

[0005] As a further technical solution of the present utility model, the bottom end of the telescopic column is sleeved in a through hole opened at the top of the wheel body bracket.

[0006] As a further technical solution of the present utility model, a bottom spring is provided at the top of the support ring, and the top end of the bottom spring is fixed to the bottom of the connecting pipe. The bottom of the connecting pipe is slidably connected with a bottom sleeve, and the bottom sleeve is sleeved on the bottom of the square pipe.

[0007] As a further technical solution of the present utility model, a rigid spring is sleeved inside the connecting pipe, and the bottom end of the rigid spring is fixed to the top of the telescopic column.

[0008] As a further technical solution of the present utility model, a beveled platform protrusion is provided at the top of the connecting pipe, and the beveled platform protrusion is sleeved in a connecting cap, and the connecting cap is fixed to the top of the support frame.

[0009] As a further technical solution of the present utility model, a support shaft is sleeved between the wheel body brackets, and a front wheel body is rotatably connected to the support shaft.

[0010] As a further technical solution of the present utility model, fixing screws are fitted and connected in threaded holes symmetrically opened at both ends of the support shaft, and the fixing screws are pressed against the wheel body bracket through gaskets.

[0011] The front wheel with a quick-release structure provided by the present utility model has the following advantages: The top sleeve and the bottom sleeve sleeved in the square pipe provide limit support for the connecting pipe. After the connecting pipe is sleeved in the top sleeve and the bottom sleeve, the locking ring will be pressed tightly on the locking section between the beveled platform protrusion and the connecting pipe under the action of the locking spring, and the wheel body bracket and the front wheel body are fixed by locking the beveled platform protrusion; when unlocking, by pressing the pressing rod to squeeze the locking spring, the locking ring is disengaged from the locking section, and the fixing of the wheel body bracket and the front wheel body can be released. The disassembly process is faster, replacing the traditional pin fixing method and improving the practicality of the structure; by arranging a rigid spring inside the connecting pipe to elastically support the telescopic column, and at the same time using the bottom spring arranged on the support ring to elastically support the connecting pipe, when the camping cart is used on uneven ground, the vibration generated is buffered by squeezing and stretching the bottom spring and the rigid spring, avoiding the structure from being broken and damaged due to vibration, thereby extending the service life of the structure. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 is the overall structural schematic diagram of the present utility model;

[0014] Figure 2 is the exploded view of the partial structure of the present utility model;

[0015] Figure 3 is Figure 2 the partial enlarged view of area A in

[0016] Figure 4 is the exploded view of the partial structure of the present utility model.

[0017] In the figure: 1, mounting beam; 2, square tube; 3, top sleeve; 4, support frame; 5, square groove; 6, pressing rod; 7, locking ring; 8, limiting projection; 9, locking spring; 10, locking section; 11, connecting pipe; 12, telescopic column; 13, support ring; 14, wheel body bracket; 15, bottom spring; 16, rigid spring; 17, inclined platform projection; 18, connecting cap; 19, support shaft; 20, front wheel body; 21, fixing screw; 22, bottom sleeve. Specific embodiments

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "mount", "connect" and "couple" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] Please refer to the attached Figure 1 - attached Figure 4, an embodiment provided by the present utility model: a front wheel with a quick-release structure, including a mounting beam 1, a square tube 2, a top sleeve 3, a support frame 4, a pressing rod 6, a locking ring 7, a limiting protrusion 8, a locking spring 9, a locking section 10, a connecting pipe 11, a telescopic column 12, a support ring 13, a wheel body support 14, a bottom spring 15, a rigid spring 16 and a front wheel body 20. On one side of the mounting beam 1, square tubes 2 are symmetrically welded, and a top sleeve 3 is sleeved at the inner top end of the square tube 2. A support frame 4 is arranged at the top of the top sleeve 3, and a square groove 5 is opened on one side of the support frame 4. A pressing rod 6 is slidably connected in the square groove 5. The pressing rod 6 is arranged on one side of the locking ring 7, and a limiting protrusion 8 is arranged on the other side of the locking ring 7. One end of the locking spring 9 is sleeved on the limiting protrusion 8, and the locking spring 9 is sleeved in a groove opened inside the support frame 4. The inner wall of the locking ring 7 presses against the locking section 10, and a connecting pipe 11 is arranged at the bottom of the locking section 10. A telescopic column 12 is slidably connected in the connecting pipe 11, and a support ring 13 is arranged at the bottom of the telescopic column 12. The support ring 13 is fixed to the top of the wheel body support 14; the bottom end of the telescopic column 12 is sleeved in a through hole opened at the top of the wheel body support 14; a bottom spring 15 is arranged at the top of the support ring 13, and the top end of the bottom spring 15 is fixed to the bottom of the connecting pipe 11. A bottom sleeve 22 is slidably connected to the bottom of the connecting pipe 11, and the bottom sleeve 22 is sleeved at the bottom of the square tube 2; a rigid spring 16 is sleeved inside the connecting pipe 11, and the bottom end of the rigid spring 16 is fixed to the top of the telescopic column 12; a bevel protrusion 17 is arranged at the top of the connecting pipe 11, and the bevel protrusion 17 is sleeved in a connecting cap 18. The connecting cap 18 is fixed to the top of the support frame 4; a support shaft 19 is sleeved between the wheel body supports 14, and a front wheel body 20 is rotatably connected to the support shaft 19; fixing screws 21 are connected in threaded holes symmetrically opened at both ends of the support shaft 19, and the fixing screws 21 press against the wheel body support 14 through gaskets. By providing gaskets, it is prevented that the pressure of the fixing screws 21 on the wheel body support 14 is too large and indentations are generated on the wheel body support 14;

[0021] Specifically, during use, the top sleeve 3 and the bottom sleeve 22 sleeved in the square tube 2 provide limit support for the connecting pipe 11. After the connecting pipe 11 is sleeved in the top sleeve 3 and the bottom sleeve 22, the locking ring 7 will tightly press on the locking section 10 between the inclined platform protrusion 17 and the connecting pipe 11 under the action of the locking spring 9, and the fixing of the wheel body bracket 14 and the front wheel body 20 is realized by jamming the inclined platform protrusion 17; when unlocking, after pressing the pressing rod 6 to squeeze the locking spring 9, the locking ring 7 is disengaged from the locking section 10, and the fixing of the wheel body bracket 14 and the front wheel body 20 can be released. The disassembly process is faster, replacing the traditional pin fixing method and improving the practicality of the structure; by arranging a rigid spring 16 inside the connecting pipe 11 to elastically support the telescopic column 12, and at the same time using the bottom spring 15 arranged on the support ring 13 to elastically support the connecting pipe 11, when the camping car is used on uneven ground, the vibration generated is buffered by squeezing and stretching the bottom spring 15 and the rigid spring 16, avoiding the structural fracture and damage caused by vibration, and thus extending the service life of the structure.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] The device embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A front wheel with a quick-release structure, comprising a mounting beam (1), a square tube (2), a top sleeve (3), a support frame (4), a pressing rod (6), a locking ring (7), a limiting protrusion (8), a locking spring (9), a locking section (10), a connecting pipe (11), a telescopic column (12), a support ring (13), a wheel body bracket (14), a bottom spring (15), a rigid spring (16) and a front wheel body (20), characterized in that: On one side of the installation beam (1), square tubes (2) are symmetrically welded. At the inner top of the square tube (2), a top sleeve (3) is sleeved. At the top of the top sleeve (3), a support frame (4) is provided. On one side of the support frame (4), a square groove (5) is opened. A pressing rod (6) is slidably connected in the square groove (5). The pressing rod (6) is arranged on one side of the locking ring (7). On the other side of the locking ring (7), a limiting protrusion (8) is provided. One end of a locking spring (9) is sleeved on the limiting protrusion (8). The locking spring (9) is sleeved in a groove opened inside the support frame (4). The inner wall of the locking ring (7) presses against the locking section (10). At the bottom of the locking section (10), a connecting pipe (11) is provided. A telescopic column (12) is slidably connected in the connecting pipe (11). At the bottom of the telescopic column (12), a support ring (13) is provided. The support ring (13) is fixed to the top of the wheel body bracket (14).

2. The front wheel with a quick-release structure according to claim 1, characterized in that: The bottom end of the telescopic column (12) is sleeved in a through hole opened at the top of the wheel body bracket (14).

3. The front wheel with a quick-release structure according to claim 1, characterized in that: At the top of the support ring (13), a bottom spring (15) is provided. The top end of the bottom spring (15) is fixed to the bottom of the connecting pipe (11). The bottom of the connecting pipe (11) is slidably connected with a bottom sleeve (22). The bottom sleeve (22) is sleeved at the bottom of the square tube (2).

4. The front wheel with a quick-release structure according to claim 3, characterized in that: Inside the connecting pipe (11), a rigid spring (16) is sleeved. The bottom end of the rigid spring (16) is fixed to the top of the telescopic column (12).

5. The front wheel with a quick-release structure according to claim 1, characterized in that: At the top of the connecting pipe (11), an inclined platform protrusion (17) is provided. The inclined platform protrusion (17) is sleeved in a connecting cap (18). The connecting cap (18) is fixed to the top of the support frame (4).

6. The front wheel with a quick-release structure according to claim 1, characterized in that: A support shaft (19) is sleeved between the wheel body brackets (14). A front wheel body (20) is rotatably connected to the support shaft (19).

7. The front wheel with a quick-release structure according to claim 6, characterized in that: In threaded holes symmetrically opened at both ends of the support shaft (19), fixing screws (21) are connected in a matching manner. The fixing screws (21) press against the wheel body bracket (14) through gaskets.

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